If you think 3-4 month is plenty of time to make changes in a product scale like this then you are clearly mistaking.
I doubt of you realise the amount of testing that is involved. I also doubt if you understand the architectural impact of changes- they are not as straight forward as you think.
^ and when the MB wins, the differences with the competition are astronomical in scale. We're talking lightyears here.
The C class won a test with a couple of tenth of a percent and the life of the 3er is over. It was good while it lasted, 30 years of being class leader down the drain just like that.
The Macan wins the specifications list. It drives better than its competitors, due to its - unique in this class - air suspension. However, the distance to the Audi is unexpectedly low - and Porsche charges for its name and image. Ultimately this costs the Macan the victory. The Mercedes can not keep up in comparison, and is just no longer the freshest. But it's still a good car - as the result of 513 points demonstrates. (google translated from Autobild)
Front and rear three quarter views of the Macan are fantastic; interestingly, the side profile much less so. All three are actually terrific vehicles - the Q5 is now the benchmark in this class (no, not you X3), the Macan is simply ultra desirable in spite of it being horrendously over-priced in our little 3rd world economy and the GLK is the most rugged, and thus most dependable off the beaten track. Great cars all of them.